Equivalent mass of \( \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3} \) in its reaction with \( ...
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0Equivalent mass of \( \mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3} \) in its reaction with \( \mathrm{I}_{2} \) is equal to:
(A) molar mass
(B) molar mass \( / 3 \)
(C) molar mass / 2
(D) molar mass / 4
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